This SON tutorial is part of the 3GPP Self-Organizing Networks series (#3GPPSONSeries). In this tutorial we will understand what is meant by Cell Outage Management (COM). COM comprises of Cell Outage Detection (COD) and Cell Outage Compensation (COC). All our #3G4G5G slides and videos are available at: Videos: https://www.youtube.com/3G4G5G Slides: https://www.slideshare.net/3G4GLtd SON Page: https://www.3g4g.co.uk/SON/ 5G Page: https://www.3g4g.co.uk/5G/ Free Training Videos: https://www.3g4g.co.uk/Training/

1. 3GPP SON Series:
Cell Outage Detection and Compensation
(COD & COC)
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2. Self-Healing Process
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Historical parameters
settings
Historical performance
indicators
Call Traces
System Alarms
Network Topology
Detection of faults
• Smart analysis
• Correlation of data
Intelligent diagnosis
• Most probable root causes
• Problem & cause prioritization
Cure
• Automated resolution
• Defined recovery processes
Data Mining
Based on Reference [2]

3. Cell Outage Management (COM)
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• Cell Outage Detection and Compensation provides automatic
mitigation of eNB failures especially in the case where the eNB
equipment is unable to recognize being out of service and has
therefore failed to notify OAM of the outage. Detection and
Compensation are two distinct cases that cooperate to provide a
complete solution:
• Cell Outage Detection (COD) typically combines multiple separate
mechanisms to determine whether an outage has occurred. This is needed to
detect the latent fault case, often described as “Sleeping Cell”, where OAM is
unaware of the issue.
• Cell Outage Compensation (COC) techniques are generally only applied after
standard soft recovery techniques have failed to restore normal service.

4. COM Affected Cells
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Cell in outage
Cell whose parameters may be adapted by the COC
algorithm
Surrounding cells whose parameters are not adapted, but
whose performance may be affected by the COC algorithm
Focus on Quality (unshaded cells)
Focus on Accessibility (straight pattern cells)
Focus on Coverage (slanted pattern cells)
Based on Reference [1]

5. COM Components
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OAM
Measurements
Detection
Compensation
X-map
Estimation
Operator Policy
Control Parameters
Based on Reference [1]

6. References and Further Reading
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• Cell Outage Management in LTE Networks by Amirijoo, M. & Jorguseski,
Ljupco & Kürner, Thomas & Litjens, Remco & Eden, Michaela & Schmelz,
Lars & Turke, U (link)
• Self-Organizing Networks: Self-Planning, Self-Optimization and Self-Healing
for GSM, UMTS and LTE, edited by Juan Ramiro and Khalid Hamied (link)
• Self Organizing Networks for 3GPP LTE by Aderemi A. Atayero,
Oluwadamilola I. Adu and Adeyemi A. Alatishe (link)
• From 4G to 5G: Self-organized Network Management meets Machine
Learning by Jessica Moysen and Lorenza Giupponi (link)
• 3G4G: Self-Organizing Networks / Self-Optimizing Networks (link)
• The 3G4G Blog: SON (link)

7. Thank You
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